//
//  WJNetworkManager+Extension.swift
//  新浪微博swift
//
//  Created by WJ-Jason on 2017/5/3.
//  Copyright © 2017年 WJ-Jason. All rights reserved.
//

import Foundation

// MARK: - 封装新浪微博的网络请求方法
extension WJNewworkManager {
    
    /// 加载微博数据字典数组
    ///
    /// - Parameters:
    ///   - since_id: 返回ID比since_id大的微博（即比since_id时间晚的微博），默认为0
    ///   - max_id: 返回ID小于或等于max_id的微博，默认为0。
    ///   - completion: w完成回调[list: 微博字典数组/是否成功]
    
    func statusList(since_id:Int64 = 0, max_id:Int64 = 0, completion:@escaping ( _ list:[[String:AnyObject]]?, _ isSucess:Bool)->()) {
        let urlString = "https://api.weibo.com/2/statuses/home_timeline.json"
        
        // Swift中 Int 可以转换成 AnyObject/ 但是Int64不行
        let params = ["since_id":"\(since_id)",
            "max_id" : "\(max_id > 0 ? max_id - 1 : 0 )"] as [String : AnyObject]
        
        tokenRequest(URLString: urlString, parameters:params) { (json, isSuccess) in
//            print("回调结果:",json ?? "");
            
            let result = json?["statuses"] as? [[String:AnyObject]]
            
            completion(result, isSuccess)
        }

    }
    
    /// 返回微博的未读数量 - 定时刷新，不需要提示是否失败！
    func unreadCount(completion: @escaping (_ count: Int)->()) {
        
        guard let uid = userAccount.uid else {
            return
        }
        
        let urlString = "https://rm.api.weibo.com/2/remind/unread_count.json"
        
        let params = ["uid": uid] as [String:AnyObject]
        
        tokenRequest(URLString: urlString, parameters: params) { (json, isSuccess) in
            
            let dict = json as? [String: AnyObject]
            let count = dict?["status"] as? Int
            
            completion(count ?? 0)
        }
    }

}

// MARK: - 发布微博
extension WJNewworkManager {
    
    /// 发布微博
    ///
    /// - parameter text:       要发布的文本
    /// - parameter image:      要上传的图像，为 nil 时，发布纯文本微博
    /// - parameter completion: 完成回调
    func postStatus(text: String, image: UIImage?, completion: @escaping (_ result: [String: AnyObject]?, _ isSuccess: Bool)->()) -> () {
        
        // 1. url
        let urlString: String
        
        // 根据是否有图像，选择不同的接口地址
        if image == nil {
            urlString = "https://api.weibo.com/2/statuses/update.json"
        } else {
            urlString = "https://upload.api.weibo.com/2/statuses/upload.json"
        }
        
        // 2. 参数字典
        let params = ["status": text]
        
        // 3. 如果图像不为空，需要设置 name 和 data
        var name: String?
        var data: Data?
        
        if image != nil {
            name = "pic"
            data = UIImagePNGRepresentation(image!)
        }
        
        // 4. 发起网络请求
        tokenRequest(.POST, URLString: urlString, parameters: params as [String : AnyObject]) { (json, isSuccess) in
            //完成回调
            
            completion(json as? [String : AnyObject], true)
        }
        
        
//        tokenRequest(method: .POST, URLString: urlString, parameters: params, name: name, data: data) { (json, isSuccess) in
//            completion(result: json as? [String: AnyObject], isSuccess: isSuccess)
//        }
    }
}

// MARK: - 用户信息
extension WJNewworkManager {
    
    /// 加载用户信息
    func loadUserInfo(completion:@escaping (_ dict : [String : AnyObject])->()) {
        
        guard let uid = userAccount.uid else {
            return
        }
        
        let urlString = "https://api.weibo.com/2/users/show.json"
        
        let params = ["uid" : uid] as [String : AnyObject]

        // 发起网络请求
        tokenRequest(URLString: urlString, parameters: params) { (json, isSuccess) in
            // 完成回调
            completion(json as? [String : AnyObject] ?? [:])
        }
    }
}

// MARK: - OAuth相关方法
extension WJNewworkManager {
    
    /// 提问：网络请求异步到底应该返回什么？-需要什么返回什么？
    /// 加载 AccessToken
    ///
    /// - parameter code:       授权码
    /// - parameter completion: 完成回调[是否成功]
    func loadAccessToken(code: String, completion: @escaping (_ isSuccess: Bool)->()) {
        
        let urlString = "https://api.weibo.com/oauth2/access_token"
        
        let params = ["client_id": WBAppKey,
                      "client_secret": WBAppSecret,
                      "grant_type": "authorization_code",
                      "code": code,
                      "redirect_uri": WBRedirectURI] as [String : AnyObject]
        
        // 发起网络请求
        request(.POST, URLString: urlString, parameters: params) { (json, isSuccess) in
            print(json ?? "获取token为空")
            
            // 如果请求失败，对用户账户数据不会有任何影响
            // 直接用字典设置 userAccount 的属性
            self.userAccount.yy_modelSet(with: (json as? [String : AnyObject]) ?? [:])
            // 加载当前用户信息
            self.loadUserInfo(completion: { (dict) in
                // 使用用户信息字典设置用户账户信息(昵称和头像地址)
                self.userAccount.yy_modelSet(with: dict)
                
                // 保存模型
                self.userAccount.saveAccount()

                print(self.userAccount)

                // 用户信息加载完成再，完成回调
                completion(isSuccess)
            })
        }
    }
}
